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NCP1217A Datasheet Enhanced Pwm Current-mode Controller

Manufacturer: onsemi

Overview: NCP1217, NCP1217A Enhanced PWM Current-Mode Controller for High-Power Universal Off-Line Supplies Housed in an SO−8 or PDIP−7 package, the NCP1217 represents the enhanced version of the NCP1203−based controllers. Due to its high drive capability, NCP1217 drives large gate−charge MOSFETs, which together with internal ramp pensation and built−in overvoltage protection, ease the design of modern AC/DC adapters. NCP1217 offers a true alternative to UC384X−based designs.

This datasheet includes multiple variants, all published together in a single manufacturer document.

Key Features

  • a high.
  • voltage startup FET, which ensures a clean and loss less startup sequence. Its current.
  • mode control topology provides an excellent input audio.
  • susceptibility and inherent pulse.
  • by.
  • pulse control. Internal ramp compensation easily prevents subharmonic oscillations from taking place in continuous conduction mode designs. When the current setpoint falls below a given value, e. g. the output power demand diminishes, the IC automatically enters the so.

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